21913340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64451}}^1$

素因数の和:64477

約数の個数: 24

約数和(自身を含む): 48725712

約数和(自身を除く): 26812372

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 64451, 128902, 257804, 322255, 644510, 1095667, 1289020, 2191334, 4382668, 5478335, 10956670, 21913340]

約数ペア:

[(1, 21913340), (2, 10956670), (4, 5478335), (5, 4382668), (10, 2191334), (17, 1289020), (20, 1095667), (34, 644510), (68, 322255), (85, 257804), (170, 128902), (340, 64451)]